Joe's Easter Egg Hunt: Riddle No. 9

On the ninth day of Joe's Mildly Entertaining Easter Egg Hunt, here's another riddle containing clues to the location of an imaginary egg:

On the ninth day of Joe's Mildly Entertaining Easter Egg Hunt, here's another riddle containing clues to the location of an imaginary egg:

Today's hidden egg lies where numbered roads meet.

To find it, we give you road math to complete:

A certain route number splits Colo's abode.

Reduce that by the number of the National Road.

Reduce that by the route with a Marysville aim,

Then find a "Green" crossroads whose sum is the same.

Where is the egg hidden?

Solve all 10 riddles. After the last one is published on Tuesday, e-mail your guesses to Joe Blundo at jblundo@ dispatch.com; or mail them to Easter Egg Hunt, in care of Joe Blundo, The Dispatch, 34 S. 3rd St., Columbus, Ohio 43215. Include your name, age, address and daytime phone number.